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(No Model.) 2 Sheets-Sheet 1.

W. J. TUNMORE.

Q SHINGLE SAWING- MACHINE.

No. 369,668. Patented Sept. 6, 1887.

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V SHINGLE-SAWING MACHINE. No. 369,668. Patented Sept. 6. 1887..

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I UNITED STATES PATENT @rrrcn.

\VILLIAM J. TUNMORE, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO WILLIS J. PERKINS, OF SAME PLACE.

SHlNGLE-SAWING MACHlNE.

SPECIFICATION forming part of Letters Patent No. 369,668, dated September 6, 1887.

Application filed November 23, 1886. Serial No. 219.660. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM J. TUNMORE, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Shingle-Sawing Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to shingle-sawing machines; and it consists in certain improvements in the bolt-carriage and in the mechanism for beveling the ends of shingles heretofore invented by \Villis J. Perkins, of Grand Rapids, Michigan.

In the drawings, Figure 1 is a broken side elevation, partly in section, of so much of a shingle-sawing machine as is necessary to illustrate my invention. Fig. 2 is a section of partof the carriage and wooden dog or bearing-block. Fig. 3 is a plan of mechanism shown in Fig. 1. Fig. 4 is a perspective view of the tilt-table with beveling-knives attached, and with the mechanism for giving movement to the tilt-table. Fig. 5 is an enlarged plan of the dovetailed groove and block. Fig.6 is a detail section showing beveling-knife. Figs. 7, 9,10,and 11 are views showing modifications for holding the wooden dog or bearing-block.

Fig. 8 is a plan of one of the movable dogs with wooden bearing-blocks inserted.

A indicates the saw, B the driving-pulley, G the carriage-driving pulley, and D E the oscillating bar and pitman, by which the sawcarriage F is reciprocated, none of these parts being of my invention.

The saw-carriage F has at the side farthest removed from the saw proj ceting ribs a a from the cross-bar b of the carriage.

Heretofore blocks of wood or soft metal have been applied to the frame or dog of a shinglesawing machine, and have been secured by a loop or strap passing over the face of the block. This was objectionable, as it did not present an entire surface of wood toward the shinglebolt, and gave a projection on which the bolt might rock. In the present invention the ad justable wooden or equivalent soft metallic block is secured to the face of the carriage or end of dog, or both, by a dovetail tongue and groove or the equivalent of such construction. bome of the various modifications the tongue and groove may take are shown in the draw- -ings.

As shown in Figs. 2, 3, and 5, ribs a are cast or otherwise secured onthe crossbar I) of the frame, so as to project toward the position the bolt is to occupy. Between these ribs I insert a wooden or other soft metallic blocl ,d, having a dovetailed portion or tongue which enters between said ribs and fits closely enough to hold the block firmly with the entire surface toward the shingle-bolt free from projection or from any metallic part which can bear against the shingle-bolt. This firm bearing of the wooden or soft metallic pushing or hearing block against a shingle-bolt is of great use in preventing the last end of the bolt or spalt from working back under the carriage and thereby permits of the cutting of the bolt up closer or with less waste.

In Figs. 7, 9, 10, and 11 the block d is shown as presenting its entire face toward the belt. In Figs. 7, 9, and 10 the bar I) has a groove cut in its face, instead of having for; ward-projecting ribs. In Figs. 9 and 1Q a metallic tongue, 6, is secured to the block and enters the groove in the frame, while in Fig. 11 the metallic tongue is secured to theblock and enters a groove in the frame. In Fig. 8 the block is shown as applied to one of the dogs, V, instead of to the frame of the carriage, the dog V having an angle-piece, V, extending inside the carriage-frame. All these constructions I consider as practically equivalent and within the scope of my invention. In Fig. 8 the end of the dog has a groove out into it for holding the block of wood or soft metal. It will be understood that this form of block may be applied to any of the various forms ofshingle-machines for which it is adapted without departing from the spirit of my invention.

L represents the tilt-table of the sawing-machine, the same being of the general construction invented by said Perkins, and attached tothe machine in the usual manner, so as to receive the shingle-bolt as it is loosened from the dogs of the carriage, and to tilt so that the machine will saw alternately butts and points from the shingle-bolt.

On the outer bars or ways, Z, of the tilt-table I place bosses m, constituting carriers or stocks for theblades orknives 12. These knives are at the forward end of the tilt-table that is, the end toward the saw. The knives stand, preferably, at an incline relative to the top of the tilt-table, and are preferably inclined on the edge, so as to give a draw out. The knives n may be secured in their seats in the stocks or by set-screws 0, or by other suitable and equivalent mechanism, and their upper edges should be so adjusted as to project up to a level with the saw.

When the shingle-saw carriage F, with the contained bolt H, is forced forward toward the saw, the lower face of the bolt will be cut by the knives in an inclined direction at about the corner of the shingle-bolt, thus giving a bevel to thelower endedges of the shinglebolt if the bolt be of just and proper length, or scoring just within the ends if the bolt be a trifle long. The cut or score at the end of the bolt which is to constitute the shingle-butt will be at least as deep as the thickness of said butt. If it be a trifle deeper, the saW-kerf will leave the bottom of the bolt smooth after the sawing.

By this arrangement of knives of the tilttable or some other part of the frame which has no forward movement toward the saw the shingles 'can be cut of a uniform length and the ends beveled at any desirable angle before they are severed from the bolt. It is evident that the process of sawing will be in nowise v retarded by the cutting, provided the carriage be driven with sufficient power to keep the machine up to the normal or desired ratevof speed with reference to the saw.

The knives can be readily removed for sharpening, and by means of inserted pieces or wedgesp in the knife stock or socket may be varied in distance from each other.

It will be understood that the ends of the shingle-bolt are dogged in the carriage above the plane of the cut of the knives, so that the knives will not out against the dogs.

It will be also understood that the same principle of operation applies to shingle-machines having saws on horizontal arbors, and that slight changes and the substitution of equivalents may be made without departing from the spirit of this invention.

I claim 1. The combination, with the carriage of a shingle-sawing machine, of a block of wood or similar material adjustably secured in the carriage at the side of the carriage farthest from the saw-arbor, and having its face toward the shingle-bolt uncovered towardthe periphery of the saw so as to crowd the shingle-bolt onto the rim of the saw, substantially as described.

2. A shinglesaw carriage having grooves in its inner face, (or in similar position in the dog, as described,). combined with removable blocks of the character described held in said grooves, the blocks presenting their uncovered working-faces toward the saw-arbor, substantially as described.

3. The combination, with the saw-carriage having grooves in its side farthest from the saw, of a metallic tongue entering said groove and a block of wood or equivalent material secured to said tongue so as to present the working-face of the block toward the saw-arbor.

4. In a shingle-sawing machine, a powerdriven carriage having clamping-dogs, a tilttable on which the shingle-bolt is adjusted, and

knives fixed-relatively to the forward and backward movement of the carriage and ex tending into the line of movement of the-bolt carried by the carriage, substantially asdescribed.

5. The combination, with the tilt-table of a shingle-sawing machine, of the cutting-knives secured thereto and extending into the path of movement of the shingle-bolt toward the saw.

6. The tilt-table having knife-seats attached to the ways thereof, in combination with knives adjustably secured in said k nife-seats, substantially as described.

7. The combination, in a shinglesawing machine, of the tilt-table having knives therein and the power-driven carriage having dovetail blocks secured therein at the side opposite the knives when the carriage is drawn away from the saw.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM 'J. TUNMORE.

Witnesses:

W. H. FOWLER, WILLIs J. PERKINS, 

